When someone gives you a bunch of stuff that you are able to use for a while and then decides to retract it that's still a net positive to you.

You have no right to continue to demand he makes his work available to you.

> I really think he was out to spite everyone.

If that were the case he would have never written it in the first place.

I have no idea what he was thinking about then when he took his stuff down, so you may be right. But having read his work for a few years I don't think it was spite; that just doesn't seem like him.

He worked for years on code and writings with free licenses - so for the most part he didn't really "delete" his work, but rather just stopped distributing it. He must have been aware of this fact when he took his sites/accounts down.